CDX-555RF/555XRF
7-12. IC PIN FUNCTION DESCRIPTION
" MAIN BOARD IC201 CXP740056-011R (SYSTEM CONTROLLER)
Pin No.Pin NameI/ODescription
1 to 3NCNNot used
4AMUTEOAudio line muting on/off control signal output OH�: muting on
5CDXLTOSerial data latch pulse signal output to the DSP
6CDDATAOSerial data output to the DSP
7CDCLKOSerial data transfer clock signal output to the DSP
8CDONOD/A converter and servo section power supply on/off control signal output OH�: power on
9ELVONOMechanism deck section power supply on/off control signal output OH�: power on
10 to 35NCNNot used
The LCD in remote commander and FM transmitter section power supply on/off control signal
36LCDONO
output OH�: power on
37LCDCEOChip enable signal output to the LCD driver in remote commander OH� active
System reset signal input from the reset switch or reset signal generator OL�: reset
38RESETI
For several hundreds msec. after the power supply rises, OL� is input, then it changes to OH�
39GNDNGround terminal
40XTALOMain system clock output terminal (12 MHz)
41EXTALIMain system clock input terminal (12 MHz)
CD text mode setting terminal OL�: CD text on, OH�: does not display track name
42TEXTSELI
Not used
43LCDINHOInhibit signal output to the LCD driver in remote commander
44LCDDATAOSerial data output to the LCD driver in remote commander
45LCDCLKOSerial data transfer clock signal output to the LCD driver in remote commander
46CFSELICustom file on/off setting terminal OL� custom file on Not used
47EEINITIInitialize signal input for the EEPROM OH�: format Not used
48EEDATAI/OTwo way data bus with the EEPROM
49EECLKOSerial data transfer clock signal output to the EEPROM
50VSSNGround terminal (for A/D converter)
51AVREFIReference voltage (+5V) input terminal (for A/D converter)
52VDDNPower supply terminal (+5V) (for A/D converter)
Setting terminal for the single disc/multiple discs mode
53SINGLEI
OL�: single mode, OH�: multiple discs mode Not used
54LDONOThe laser automatic power control on/off signal output OH�: automatic power control on
55AGCHOLDORF AGC hold on/off signal output OH�: hold on
56RF AGCORF AGC level control signal output OL �: off, center voltage : 40%, OH�: 60%
57H.TEMPIHigh temperature sensor input terminal Not used
58KEYINIKey input terminal (A/D input) from the remote commander
59EHSIElevator height position detection signal input from the elevator height sensor (A/D input)
Input of signal for the fine adjustment (elevator height (address) adjustment) of elevator position
60MCKI
(A/D input)
61NCNNot used
62ACCINIAccessory detection signal input OL�: accessory on
63EJECTIEject switch input terminal OH� active
64MAGSWIMagazine in/out detection switch input terminal Not used
Chucking end detect switch input terminal
65LOAD1I
OL�: When completion of the disc chucking operation
66LOAD2ISave end detect switch input terminal OL�: When completion of the disc save operation
67 to 70NCNNot used
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ACEC
